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Formamidinium Lead Iodide Perovskite Films with Polyvinylpyrrolidone Additive for Active Layer in Perovskite Solar Cells, Enhanced Stability and Electrical Conductivity

Kojić, Vedran; Bohač, Mario; Bafti, Arijeta; Pavić, Luka; Salamon, Krešimir; Čižmar, Tihana; Gracin, Davor; Juraić, Krunoslav; Leskovac, Mirela; Capan, Ivana; Gajović, Andreja (2021) Formamidinium Lead Iodide Perovskite Films with Polyvinylpyrrolidone Additive for Active Layer in Perovskite Solar Cells, Enhanced Stability and Electrical Conductivity. Materials, 14 (16). ISSN 1996-1944

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In this paper, we studied the influence of polyvinylpyrrolidone (PVP) as a stabilization additive on optical and electrical properties of perovskite formamidinium lead iodide (FAPI) polycrystalline thin films on ZnO nanorods (ZNR). FAPI (as an active layer) was deposited from a single solution on ZNR (low temperature processed electron transport layer) using a one-step method with the inclusion of an anti-solvent. The role of PVP in the formation of the active layer was investigated by scanning electron microscopy and contact angle measurements to observe the effect on morphology, while X-ray diffraction was used as a method to study the stability of the film in an ambient environment. The effect of the PVP additive on the optical and electrical properties of the perovskite thin films was studied via photoluminescence, UV-Vis measurements, and electrical impedance spectroscopy. We have demonstrated that PVP inclusion in solution-processed perovskite FAPI thin films prevents the degradation of the film in an ambient atmosphere after aging for 2 months. The inclusion of the PVP also improves the infiltration of FAPI perovskite into ZnO nanostructures, increases electrical conductivity and radiative recombination of the photo-generated charge carriers. These results show promising information for promoting PVP stabilized FAPI perovskites for the new generation of photovoltaic devices.

Item Type: Article
Uncontrolled Keywords: formamidinium lead iodide perovskite; polyvinylpyrrolidone; ZnO nanorods; optical properties; electrical properties
Subjects: NATURAL SCIENCES > Physics
TECHNICAL SCIENCES > Chemical Engineering
Divisions: Division of Materials Chemistry
Division of Materials Physics
Project titleProject leaderProject codeProject type
Nanokompoziti s perovskitima za fotovoltaike, fotokatalizu i senzoriku-NanoPeroPhotoSensAndreja Gajović; Vilko Mandić; Milivoj Plodinec; Davor Gracin; Nikša Krstulović; Jelena Macan; Igor Lukačević; Maja Varga; Matko Mužević; Denis Stanić; Ivana Grčić; Marko Petric; Igor Petrović; Ivana Melnjak; Lucija Radetić; Andreja ŽužićIP-2018-01-5246HRZZ
Unaprijeđenje solarnih ćelija i modula kroz istraživanje i razvoj-Krunoslav JuraićKK.
Depositing User: Ana Zečević
Date Deposited: 04 Mar 2024 08:53
DOI: 10.3390/ma14164594

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